Vacuum cleaner



FIG. 1 is a left side perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof, the right side being a mirror image;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a bottom view thereof. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 